| 藏北锑矿带美多献纳西低硫化型浅成低温热液锑-金银矿的发现及其地质意义 |
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| 引用本文：王立强,周敖日格勒,李保亮,孙杨,何逸飞,王勇,刘海明,何云龙,李阳,洪晨瑜,何亮,扎西平错.2026.藏北锑矿带美多献纳西低硫化型浅成低温热液锑-金银矿的发现及其地质意义[J].地球学报,47(2):249-256. |
| DOI：10.3975/cagsb.2025.071711 |
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| 基金项目:本文由中国地质调查局地质调查项目(编号: DD20230203408; DD202402042)和中国地质科学院基本科研业务费专项(编号: KK2306) 联合资助。 |
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| 中文摘要:藏北锑矿带是我国十分重要的锑成矿带之一, 被视为受构造控制的单锑成矿带。美多献纳西锑-金银矿系笔者于藏北锑矿带所发现的首例含Au锑矿。文章通过对其蚀变类型、矿化特征、矿物组合等方面的初步研究, 认为成矿作用类型属于低硫化型浅成低温热液型锑-金银矿, 不同于藏北锑成矿作用的以往观点。基于对矿化成因类型的新认识并结合现有的激电剖面测深结果, 笔者认为矿区尚具有良好的锑矿找矿潜力, 金、银找矿也应成为下一步勘查工作部署的重点。美多献纳西低硫化型浅成低温热液锑-金银矿的发现将为进一步查明藏北锑矿床成因奠定重要基础, 并在丰富藏北锑矿带矿床成矿系列、完善区域成矿规律、拓展区域找矿方向方面产生积极影响, 具有十分重要的区域成矿学与找矿意义。 |
| 中文关键词:锑-金银矿 低硫化型浅成低温热液成矿 找矿潜力 美多献纳西 藏北锑矿带 |
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| Discovery and Geological Implications of the Meiduoxiannaxi Low-sulfidation Epithermal Sb-Au-Ag Mineralization Occurrence in the Zangbei Sb Metallogenic Belt |
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| Abstract:The Zangbei Sb metallogenic belt is one of the most important antimony metallogenic belts in China. Traditionally, Sb deposits developed in this metallogenic belt were believed to be controlled by faults and anticline, and are single Sb deposits without other metal associations. The Meiduoxiannaxi Sb-Au-Ag mineralization occurrence represents the first Au-bearing Sb mineralization identified in the Zangbei Sb metallogenic belt. In this paper, the types of hydrothermal alteration, characteristics of mineralization, and gangue and metal mineral associations were studied. The Meiduoxiannaxi Sb-Au-Ag mineralization has been preliminarily constrained to be the typical low-sulfidation epithermal Sb-Au-Ag mineralization. Our viewpoint is significantly different from those previous perspectives. Based on the new understanding of the genetic type of the Meiduoxiannaxi mineralization occurrence, combined with the result from induced polarization profile depth measurements, it is believed that this mining area still has good potential in search for Sb orebodies. In particular, future prospecting and exploration should focus on Au-Ag precious and Zn-Pb base metal orebodies. The discovery of the Meiduoxiannaxi low-sulfidation epithermal Sb-Au-Ag mineralization occurrence will play an important role in further investigating the genesis of Sb deposits in the Zangbei Sb metallogenic belt. It will have positive impacts on enriching the metallogenic series of mineral deposits, improving the regional metallogenic regularity, and expanding the regional prospecting direction in the Zangbei Sb metallogenic belt. In summary, the discovery of the Meiduoxiannaxi Sb-Au-Ag mineralization occurrence has significant regional metallogenic and prospecting significance. |
| keywords:Sb-Au-Ag mineralization low-sulfidation epithermal mineralization prospecting potential Meiduoxiannaxi Zangbei Sb metallogenic belt |
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